Mold for casting chilled rolls.



R. H. WEST.

MOLD FOR CASTING OHILLED ROLLS. APPLICATION FILED 1150.1. laos.

PATENTED JUNE 2s, 190s.

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THE Norms Farsns co.. wAsmNmqN. n, c.

PATENTED .TUNE 23, l1908.

R. H. WEST. MOLD FOR CASTING GHILLED ROLLS.

VAIPLICIATIQN' FILED DEO. l. 1906.

5 SHEETS-SHEET 2.

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No. 891,309. PATENTED JUNE 23, 1908.

. R. H. WBST MOLD POR CASTING GHILLBD ROYLLS.` APrLIoATln FILED 1150.1.190e.

5 SHEETS-SHEET 3.

w/INESSES; i f m/z/E/vof? u @M MM Ano/mir TH: Nanni: PETA-Rs ca..wAsHrNcwN, n. c.

R. H. WEST.

MOLD FOR CASTING GHILLED ROLLS..

APPLICATION FILEDvDEO. l, 1906.

PATENTED .TUNE 23, 1908.

6 SHEBTS-SHEET 4;1

No. 891,309. PATLNTLL JUNE 23, .1908;

L. H. WEST. MOLD PoRv CASTING GHLLLBD ROLLS.

APPLICATION FILED DEG. 1. 1906.

. 5 SHEETS-SHEET 5l Arronfrs rus NoRms Psrr'as ca., wAsHrNnruN, D. c.

RALPH HENRY WEST, OF CLEVELAND, OHIO.

MOLD FOR CASTING CHILLED ROLLS.

Application led December 1, 1906.

Specification of Letters Patent.

Patented .Tune 23, 1908.

Serial No. 345,858.

To all whom it may concern:

Be it known that l, RALPH HENRY WEST, a citizen of the United States ofAmerica, residing at Cleveland, in the county of Cuyahoga and State ofOhio, have invented certain new and useful Improvements in Molds forCasting Chilled Rolls; and I hereby deolare the following to be a full,clear, and eX- act description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same.

This invention relates to improvements in molds for casting chilledrolls.

The primary object of my invention is to provide a roll-casting moldwhich is beneiicial in the manufacture of chilled rolls in obtainingcastings which have the requirements essential for the production of achilled roll in which the chilled peripheral crust or shell of theroll-body is uniform in thickness circumferentially and from end to endof the roll, free from checks or cracks and other imperfections andfound to .be perfectly round when put in a lathe to be turned.

With this object in view, my invention consists, lirst, in the provisionof a roll-casting mold in which the upper mold-part or cope and a headwhich forms a bottom or support for the body of loam or sand forming thesurrounding wall or walls and bottom of the roll-neck-forming cavity ofthe drag are shiftable vertically to accommodate a lowering of thecasting and a depression by the descent of the casting of the said bodyof loam or sand while the chill and the dragcasing which surrounds thesaid body of loam or sand remain stationary g second, to provide a chillwhich is composed'of separable superimposed rings which have suchcontour or shape interiorly as to afford bearing to and support thecasting during and until after the contraction of the casting'in theoperation of the mold and cause the crust or shell of theroll-body-forming portion of the casting to be accurately centeredduring the whole or greater part'of the cooling or contraction of thecasting; third, to so construct the cope that during the operation ofthe mold the metal between the eripheral crust or shell of the body ofmetal orming the rollbody andthe neck-forming metal in the cope isdepressible independently of the said shell or crust during the coolingor contraction of the casting to thereby better insure a good unionbetween the inner end-portion of the upper neck and the body of the rolland to largely avoid the necessity of expensive machining of thewabble-forming portion of the said neck and damage by shrinkage of thecasting at the junction kof the said neck and the roll-body fourth, torender the vertically movable head of the drag and the verticallymovable cope shiftable simultaneously by a simple operative connection`between the cope and the said head, as, for instance, by means ofscrew-threaded rods and nuts g iifth, to positively prevent upwarddisplacement of the cope during the pouring of the mold; sixth, toprevent too great a strain coming upon the operative connection betweenthe said head and the cope during vertical eX- pansion of thechill-composing rings seventh,

ln the accom anvinv drawin s Fi ure 1- u C I is a side view, mainly incentral vertical section, of a roll-casting mold embodying my invention.Figs. 2, 3 and 4 are transverse sections on line 2 2, line 3---3 andline 4 4, respectively, Fig. 1, looking downwardly. Fig. 5 is a verticalsection on line 5 5, Fig. 1, looking in the direction indicated by thearrow. termediate chill-composing rings. Fig. 7 is a transverse sectiononline 77, Fig. l, looking downwardly. Fig. 8 is a sectional view of aportion of the chill. transverse sectionson line '9 9 and line 10 l0,respectively, Fig. l, looking downwardly.

My improved roll-casting mold comprises a lower mold-part or drag A, acentral moldpart or chill B and an upper mold-part or cope C. p

The chill B (see Figs. 1, 3 and 4) is stationary, being supported aswill hereinafter appear. The chill B is annular and arranged vertically.

Fig. 6 is a top plan of one of the in- Figs. 9 and 10 are The uppermold-part or cope C (see Figs. l i

depends into and snugly but slidably fits within the upper end of thechill-chamber. The cope C is supported as will hereinafter appear from astationary annular chill-surrounding jacket D in such a manner as torender the cope capable of being lowered within the chill.

The drag A (see Figs. 1 and 7) is provided with a cavity a arrangedcentrally of the drag and extending downwardlv from the upper end of thedrag a suitable distance. The cavity a is arranged centrally of thelower end of and in communication with the chill-chamber. The body ofthe roll to be produced is cast in the chill B whereas the necks of theroll are cast in the drag and cope. The drag-cavity a and thecopechamber 13 are of course enough smaller diametrically than thechill-chamber and have the general outline required to'form the necks ofthe roll to be cast.

The surrounding wall or walls and the bottom of the drag-cavity (L areformed by a body of suitable sand or material such, for instance as whatis known in the art as loam or loam sand a', which body is contained anddepressible within and surrounded by a stationary metal casing E whichsurrounds the upper portion of a circular head F which forms a bottomfor the said body of loam or sand and is adapted to be lowered withinthe casing E. The head F is instrumental in supporting the body ofloam-sand a and movable with the cope as will hereinafter more fullyappear. The upper end of the body of loam-sand a projects somewhat intothe chill-chamber and snugly fits the lower end of the chill interiorly.

The cavity a is provided at one side and a suitable distance below theupper end of the cavity (see Figs. 1 and 7) with an inlet for moltenmetal, and the mold is poured through the said inlet which is formed bythe discharging end of a gate or passage-way a2 by which the moltenmetal is fed to the said cavity.

The lower or inner end-portion of the copechamber 13 (see Fig. 1) hasthe outline and dimensions re uired to form the inner endportion of a rol-neek between the outer and wabble-forming end-portion of the said neckand the body of the roll, and the surrounding wall or walls of'the saidportion of the copechamber are formed by a body of loam-sand 14 built upwithin and surrounded by and supported in any approved mannerfrom theinner section g of a metal casing which comprises the said inner sectionandan outer section G which surrounds the inner casingsection g (seeFigs. 1 and 3) and the remainder of the cope-chamber has the contour anddimensions required to form the wabbl'eforming outer end-portion of thesaid neck and to form a feeding-head h above the wahble-casting portionof the said chamber, with the surroundin wall or Walls of thefeedinghead and wabb e-casting portion of the copechamber b'uilt up of abody of loamsand 15 within and surrounded by and supported in anyapproved manner from a metal casing I which is seated on but removablefrom the top of the inner section g of the lower copeca'sing. 1t will beobserved therefore that the cope comprises an upper part` whichconsistsof the casing I and body of loamsand 15 and a lower part whichconsists of the casingsections G and g and body of loam-sand 14.

The inner section g of the casing of the lower cope-part, is provided atits upper end and externally with a laterally and outwardly projectingannular flange g which (see Figs. 1 and 2) is provided at its upper sidewith staples J spaced circumferentially of the cope and engaged by thehook-shaped heads lc of hook-bolts whose screw-threaded shanks K extendupwardly through ears I formed on and externally of the upper end of theupper cope-casing I, and correspond ingly threaded nuts l are mounted onthe said shanks and arranged. to be tightened against the upper surfacesof the said ears and instrumental in preventing displacement of theupper core-part upwardly from or laterally of the lower mold-part. Bymeans of the said staples, hook-bolts and nuts the upper cope-part isdetachably secured to the lower cope-part, and only the withdrawal ofthe nuts l is required to accommodate the separation of the uppercope-part from the lower cope-part.

The outer section G of the casing of theA lower cope-part is preferablylarger in internal diameter than the external diameter of the innersection g of the said casing, and the space formed between the opposingsur# faces of the said casing-sections (see Figs. 1 and 3) is preferablyfilled with sand m to decrease any chilling tendency of the lowerextremities of the said casing-sections, which sand is supported in anyapproved manner from the outer casing-section G.

The outer section G of the casing of the lower cope-part is supportedfrom the jacket D as will hereinafter appear. The inner casing-section gis supported at its upper end as will hereinafter appear from the outercasing-section G.

The chill B (see` Fig. l) is composed of superimposed metal ringsarranged in line vertically, and the intermediate chill-composing ringsR between the bottom chill-composing ring r and the top chill-composingring t are preferably interchangeable and of corresponding constructionfor convenience and for economy in the manufacture of the same. Thechill is supported from the dragcasing E, as already indicated, andpreferably the said casing is provided at its upper end and interiorlywith an annular recess e whose surrounding wall is beveled, which recessis arranged concentrically relative to the drag-cavity a and snuglyengaged by the externally diametrically reduced lower end of the bottomchill-ring r whose body-portion rests upon the said casing, whichchillring is therefore accurately centered relative to the drag-cavity.

Each chill-ring, save the top chill-ring, (see Figs. 1, 6 and 8) isprovided in its upper end and internally with an annular recess 1S whosesurrounding wall is preferably beveled,

lwhich recess is 'engaged by the externally diametrically reduced lowerend of the next upper chill-ring. It will be observed therefore that thelower end of the upper of adjacent chill-rings snugly engage a recessformed in and extending circumferentially of the lower of the saidchill-rings, that each intermediate chill-ring is consequently locked byand between the adjacent chill -rings, and that the upper of saidchill-rings is accurately centered relative to and prevented fromdisplacement laterally of the lower of the said chill-rings.

The opening which extends vertically through each chill-ring, save thetop chillring t, flares upwardly and is consequently gradually enlarged.transversely toward its upper end so that the surrounding wall of thesaid opening forms an upwardly and outwardly sloping seat 19 extendingcircumferentially of the chill from the lower end of the respective ringto the recess 18 in the upper end of the ring. Obviously therefore eachchill-ring (see Figs. 1 and S) overhangs the.

seat 19 of the next lower chill-ring circumferentially of the chill.

The top chill-ring t (see Fig. 1) has the lower portion of the o eningwhich extends vertically therethroug substantially or approximatelycorresponding in diameter with the diameter of the upper end of thesloping seat formed interiorly of the second uppermost chill-ring, andthe lower portion 20 of the surrounding wall of the said opening istherefore arranged vertically, whereas the said wall above its lowervertically arranged portion 20 is provided with an upwardly flaringannular recess 22 whose surrounding wall forms an upwardly and outwardlysloping seat for the upper end of the roll-bodyforming portion of thecasting to be produced by my improved vmold.

The lower portion of the solid top ring t of the chill, substantiallycorresponding in internal diameter with the diameter of the upper end ofthe sloping seat formed internal y of the uppermost intermediatesectional chill-ring, permits the hoisting of the said top chill-ringfrom the casting so as to liberate the said sectional chill-ring andpermit the sections of the said sectional chillring to be removedlaterally to free the casting, and obviously the lateral removal of thesections of the upper of adjacent intermedifrom the said recess to theexterior of the A chill and form outlets for permitting the escape ofair and gases from within the chill during the pouring and o eration ofthe mold.

Each intermediate chi l-ring R (see Fig. 8) is preferably rounded, as at24, at the junction of its sloping seat 19 with the bottom or downwardlyfacing surface of the ring.

To render the construction simple and inexpensive and to accommodate anindependent renewal of different portions of the chill and to readilyaccommodate the separation of the intermediate chill-rings from thecasting formed in the chill, each intermediate chill-ring R ispreferably divided vertically into two halves or sections, andpreferably the adjacent ends of the sections of each chill-ring areprovided with registering holes 25 which extend through the saidsections and are engaged by a pin or member 26 which is instrumental inproperly joining and holding the said ends together (see Fig. 8) butadapted to be driven endwise from one or both of the engaging holes tofacilitate the separation of the said sections when required.

Each chill-ring below the top Vchill-ring t is provided in its upper endwith grooves or recesses 27 arranged radially and spacedcircumferentially of the chill. The grooves or recesses 27 in the lowerof adjacent chill-rings form holes at the joint between the said ringsfor the escape of air and gases from interiorly of the chill during thepouring and operation of the mold.

By the construction hereinbefore described it will be observed that thechill is provided internally with vertically spaced upwardly andoutwardly sloping seats 19 formed one in each chill-ring and extendingcircumferentially of the respective chill-ring, and that. the ointbetween adjacent chill-rings is formed at the upper end of the slopingseat of the lower of the said chill-rings.

The slope of the sloping seats 19 of the lower of two adjacentchill-rings is less than the slope of the sloping seat 19 of the upperof the said chill-rings as only clearly indicated by the illustrativedotted lines in FigS.

By the increase in the slopes of the sloping seats of the chill-ringstoward the upper end of the chill the contracting casting can beaccurately centered relative to. and from end to end of the chill by thesaid seats during and until after any lowering of the casting while thecasting is cooling or contracting. In casting a roll by my improved moldthe peripheral crust or shell of the casting formed in the chill isduring and upon its contraction maintained'in a strictly centralpositionrelative to the chill and supported circumferentially of andupon the aforesaid sloping seats ofthe chill-rings. The casting issupported until and after its final contraction at as many intervalsverticallyl as there are sloping seats provided for the castinginteriorly of the chill so that the said shell or crust is not liable tobe cracked or put out of round or rendered defective by the pressure ofmolten metal within and centrally of the casting. lt will also beobserved that by the extension of each sloping seat-forming surface fromend to end'of the chill-ring interiorly of which the said surface isformed so that the lower end of the upper of adjacent sloping surfacesis arranged substantially in line horizontally with the upper end of thelower of the `said surfaces, the largest possible bearing is afforded tothe casting during the cooling or contraction of the casting.

To form a structure which has the requisitefrigidityand is convenient inthe assemblage of the parts the top and bottom chillrings are preferablymade respectively in one solid piece whereas each intermediatechill-ring is preferably arranged with the joints between its halves orsections alter- A nating with the joints between the sections of theadjacent chill-ring or chill-rings. lt will be observed therefore thatthe chillof my improved roll-casting mold preferably comprisessuperimposed intermediate sectionalrings R arranged in line verticallyand locked between a suitably supported solid bottom ring 1" and a solidtop ring t, with the lower portion of each intermediate ring snuglyembraced by the upper portion of the next lower ring, with the saidintermediate rings preferably divided vertically into halves orsections, with the .joints formed between the sections of eachintermediate ring not only alternating with but spaced equidistantlyfrom the joints formed between the sections of the next adjacentintermediate ring or rings so that the upper or adjacent intermediaterings is overlapped interiorly at each joint thereof by a section orsections of the lower ofthe said adjacent rings. For instance, in Fig. 4the joints-formed between the halvesof the upper of two adjacentintermediate rings R are shown in solid lines, as at 30, whereas thejoints formed between the halves of the next lower intermediate ring areshown in dotted lines, as at 32.

The chill is surrounded by a jacket-forming tubular metal shell D whichis larger in internal diameter than the external diameter of thechill-rings and extends from around the lower portion xof the topchill-ring t and around all of the intermediate chill-rings R and bottomchill-ring 1 and rests at its lower end upon the drag-casing E, snuglyeinbracing an outwardly and upwardly facing beveled shoulder 33 formedon the said casing.

rlhe annular space formed between the chill B and the jacket D is filledwith Sand or other readily displaceable or fluent material 34. The saidspace is filled by dropping the filling-forming material 34 into thespace at the upper end of the space and is emptied of the said material(see Figs. 4 and 5) through lateral apertures 35 with which the jacketis provided at its lower end, which apertures are closed by suitablyapplied removable plugs 36.

lt will be-observed that the filling 34 and jacket D brace thesuperimposed chill-rings exteriorly from end to end of the chill, but topositively avoid any inadequacy in the external bracing of the sectionalintermediate chill-rings B, each section of each intermediatechill-ring, as shown in Fig. 4, is engaged at its outer side byset-screws 37 which engage correspondingly threaded holes formed in andare consequently borne by the jacket D, `which screws are preferablyspaced equidistantly circumferentially of the chill, and said ring ispreferably arranged with each joint thereof midway between two of thesaid set-screws.

The jacket D preferably consists of an annular cylinder composed of asingle piece, as shown, and the set-screws 37 constitute adjustablemembers whereby the sections of the intermediate and sectionalchill-rings can be adjusted with the greatest accuracy.

The outer section G of the casing of the lower cope-part (see Figs. land 2) is adjustable vertically as will hereinafter appear. The saidcope-casing-section G is provided at its upper end and externally with alaterally and outwardly projecting annular flange G. The flange g of theinner section of the casing of the said lower cope-part overhangs theiiange G and in the normal and upper position of the casing-section grelative to the section G is arranged a suitable distance above the saidfiange G. Screws w are screwed from above the flange g downwardlythrough correspondingly threaded holes formed in the said flange atsuitable intervals circumferentially of the cope and extend intoengagement with the adjacent upper surface of the cope-casing-section G.The screws w constitute vertically adj ustable bottom bearings for theflange g of the inner cope-casingsection g as hereinbefore indicated.

Bolts extend through the flange G of the cope-casing-section G andloosely through the fiange g of 'the cope-casing-section g. The bolts:tare arranged with their heads countersunk in the underside of theflange G and correspondingly threaded nuts x are mounted on the shanksof the bolts at the top of the flange g. The nuts when tightened preventdisplacement of the cope-casing-section g upwardly independently of thecopecasing section G. lt is obvious that the copecasing-section g, andconsequently the casing metal within the chill and next around the innerend of the upper neck of the roll being cast without exerting likepressure downwardly upon the upper' end of the contracting crust orshell of the roll-body-forming portion of the casting.

The chill B (see Figs. 1 and 5 is provided at the upper end of thesloping seat 19 formed internally of the bottom chill-ring r with alateral hole 38 extending from the interior to the exterior of thechill, which hole tapers toward its outer end and is directly oppositeand in registry with an outwardly tapering transversely smaller hole 4()formed in the jacket D and extending from the interior to the exteriorof the jacket, and a. correspondingly tapering plug 42 engages the saidhole and is shiftable inwardly. Thel plug 42 extends a suitable distanceoutwardlybeyond the exterior' of the jacket D and has its inner endbeveled and arranged flush in the outer and normal position of the plugwith the sloping seat 19 of the bottom ring of the chill. A tapering pin43 extends through the plug 42 exteriorly of the jacket D. ln the outerand normal position of the plug 42 the pin 43 is spaced such a distancefrom the exterior of 'the jacket that the plug can only be shiftedinwardly far enough to render it capable of measuring the horizontalcontraction of the roll-body-forming portion of the casting. The pin 43obviously therefore forms a stop for limiting the inward movement of theplug whose outward movement is prevented as desired by the taper of theplug and plugengaging holes.

The upper end of the chill-jacket D (see Figs. 1, 2, 3 and 9) forms aseat for blocks y which are removably seated upon the said jacket andspaced circumferentially of the chill. Each block y is reducedtransversely at its lower end, as at y, and the lower transverselyreduced end y of the said blocks depends into and snugly lits within thespace formed between the chill and the jacket. lt will be observedtherefore that several blocks y are removably supported from the jacketand spaced circumferentially of the top chillring t.

lt will be observed that the engagement of the transversely reducedlower ends of the blocks y with the space interiorly of the jacketprevents displacement` of the said blocks laterally from off the jacket.

Each block fy is engaged on top by the shank of a screw 45 which extendsvertically through and engages a correspondingly threaded hole formed ina laterally and outwardly projecting lug 46 which is formed on theflange G of the section G of the casingvof the lower cope-part. Thecope-casing-section G is provided externally therefore with laterallyand outwardly projecting members 46 which are spaced circumferentiallyof the cope and overhang the blocks y, and the screws 45 are screwedvertically through the said lugs into engagement with the upper surfacesof the said blocks and form vertically adjustable bottom bearings forthe cope.

Upright rods P (see Figs. 1, 2, 3, 4, 7, 9 and 10) which have externallyscrew-threaded ends are vertically arranged externally and spacedcircumferentially of the jacket D and extend loosely through laterallyand outwardly projecting members 48 formed on the flange G of thecope-casing-section G and loosely through holes 52 formed in thelaterally projecting lugs with which the upper end of the jacket isexternally provided and loosely through holes 53 formed in lugs f whichare formed on a laterally and outwardly projecting fiange f With whichthe head F is provided under the lower end of the drag-casing E, whichflange abuts against the said endof the said casing in the upper andnormal position of the said head. Preferably the rods P where theyextend through the holes 52 and 53` are angular in crosssection, and thesaid holes are correspondingly angular so that turning of the rods isprevented.

Nuts Q are mounted on the rods P above the members 48 of the flange G ofthe copecasing-section G.

The rods P are threaded from their upper ends downwardly into suitableproximity to the jacket D, and nuts O are mounted on the rods abovewashers O which are interposed between the said nuts and plates 55which` rest upon the upper end of the jacket and overlap blocks orpieces 56 of wood or somewhat coinpressible material borne by the chill.Preferably the compressible members 56 rest on upwardly facing shoulders57 with which the top chill-ring t is externally provided and eachmember 56 snugly fits between a shoulder 57 and the plate 55 overlappingthe said shoulder. The compressible members 56 prevent undue strain uponthe rods P by any tendency of the chill to expand upwardly, and the topchill-ring t is provided externally with laterally and outwardly facingfiat surfaces 58 and the plates 55 extend and conform at their innerends to the said fiat surfaces to prevent turning of the plates.

Nuts N are mounted on the rods P next below the lugs f of the ilangef ofthe head F and support the said head.

The nuts O are instrumental in supporting E is stationary, resting uponstationary posts y the rods P and in holding the plates 55 down on thecompressible members 56 and prevent upward displacement of the topchill-ring t during the pouring of the mold.

It will be observed that 'the rods P and the nuts Q and N form anoperative connection between the head F of the drag and the cope, andthe cope and the said head together with the body of loam or sand a/ ofthe drag and the casting can be lowered simultaneously while the chillremains stationary, and the cope and head arelowered by grav-ity uponproperly manipulating 4the screws 45 and nuts O after severing theymetal in the gate a2 by a suitably applied 'cut-oliL1 62 shown in Fig.7.

By the construction hereinbefore described it will be observed that thechill and Ethe'chillsurrounding jacket are su ported from thedrag-casing; that the chil is 'held downwardly upon the said drag-casingand 'co'n seq'uently prevented from displacement upwardly from thedrag-casing E by the nuts O, washers O', plates 55 and compressiblemembers 58 g Ithat the cope is supported Ifrom the drag-casing E throught'he medium of the chill-surrounding jacket and blocks y interposedbetween said jacket and the screws 45; that in vthe upper andfno'rmalposition of the cope the lia-ngef of the head F -abuts, as alreadyindicated, against the lower end of the drag-casing E, and 'togetherwith the nuts N, rods P and nuts Q prevent upward displacement of the'cope during the pouring of the mold; that the drag-'casing orsupporting members 60 arranged lunder the said casing externally of theflange f of the head F; that the whole weight of the chill and castingis borne by the drag-casing E, and that, of course, preparatory to anylowering of the head F continuity in the gate or passage-way a? isinterrupted at the junction of the casing E with the body of loam orsand a by properly operating 'the cut-off 62 which preferably comprisesa 'curved metal bar shown only in Fig. 7 and engaging a guideway 63which is formed in and extends circumferentially of the dragecasing Efrom a point ,in close proximity to one side wall of the gate orpassage-way a2 a suitable distance circumferentially of the drag, andthe cut-off 62 is actuated endwise of 'the guideway 63 into or againstthe opposite side wall of the said gate or passage-way to separate anymolten metal within the said passageway where the latter extends throughthe body of loam or sand a from any 'metal in the said passage-'waywhere the latter is 'arranged externally of the said body of loam orsand. To facilitate its operation the cutoi 62 is beveled at its forwardend and outer side, as at 64, and during the operation of the cut-olithe sloping surface 64 tends to shove back any metal within the Ygate orIn solid lines Fig. 7 the cut-oil 62 is shown in its normal andinoperative position, whereas 1n dotted h'nes 1n the same figure thecut* oli is shown in its operative position inter-- rupting continuityin the passage-way a2.

The drag-casi E is provided at its upper end and internaly with anupwardly and outwardly slopin 'seat e which extends "circumferentiallyor the said casing and is arranged flush with and forms a downwardextension of the sloping seat 19 of the bottom chill-ring r. The castingin lowering the same during the contraction of the casting descends fromthe sloping seat 19 of the bottom chill-ring r onto and adown the seate.

Briefly described the operation of my i'mproved mold is as follows z-Themolten metal employed in'casting a roll is introduced through the gateor passage-way a2 to the drag-cavity a, Jfilling the said cavity andthen rising into and iilling the chill and then rising into and withinthe cope-chamber 13 until the level ofthe molten metal within thecopechamber has risen as far as the upper end of the lower cope-part. lwould here remark that the upper cope-part can be kept off the mold`preparatory to the pouring of the mold so that the operators orattendants can skim oi any dirt or dross lappearing at the level of themolten metal when the said level rises to the upper end of the lowercopespart, and that when the molten metal has 'had all the dross anddirt skimmed therefrom and the fed metal has settled down from vthelower cope-p art to nearly fully feed the roll-forming chill the uppercope-part is placed and fastened in position upon the lowercope-part,and the cope-chamber (including the feeding head h) is then filled tothe upper end of the upper mold-part by pouring molten metal into thefeeding head from above after which by the use of a feeding rod workedup and down round the wabble-forming portion and inner end or mainportion of the roll-neck to be cast within the cope a good union of themetal below the wabble and the metal introduced from above is effected'.By this method accommodated by my improved construction of cope adesirable casting7 as far as the upper neck of the roll (including itswabbleeforming portion) is concerned, is not only obtained but thenecessity of' not inexpensivev machining of the wabble-forming portionof the upper neck of a roll is avoided without damage by shrinkage tothe casting at the junction of the roll-body and upper neck. The moltenmetal introduced into the mold is permitted to stand until it shall haveformed a suitable shell or crust in the chill whereupon the cope and thehead F and with them the body oi' loam or sand a and the casting beingformed in the mold are lowered by a proper manipulation of the screws 45and nuts O to insure the maintenance of the beads or ribs which areformed externally of the crust or shell and over the sloping seats ofthe chill-rings, in contact with the said seats until after thecontraction has ceased, or until after the desired maximum descent ofthe roll-body-forming portion of the casting on the upwardly andoutwardly sloping seat e of the drag-casing E is obtained. Obviously theupper of two adjacent ribs or beads formed on the roll-bodyformingportion of the casting will lower somewhat more through verticalcontraction during the casting of the roll than the lower ofthe saidbeads or ribs and to accommodate this unequal lowering of the said ribsor beads the importance of the gradual increase in the slopes of thesloping seats of the chill-rings toward the upper end ofthe chill isapparent.

lf pressure is to be exerted downwardlyy upon the upper end of theroll-body-forming metal to form a more desirable union between the upperneck and the roll-body, or for other reasons, the inner section g of thecasing of the lower cope-part and with it the surrounding wall or wallsof the cope-chamber 13 and the casing l of the upper mold-part arelowered independently of the outer section G of the casing of the lowermold-part by a proper manipulation of the screws w and nuts 0c.

It is quite apparent that the construction hereinbefore describedaccommodates lthe employment of several methods suitable for use inseparating the casting from the mold after the removal of the cope. Thecope is of course readily removed upon withdrawing the nuts Q. Onesimple method of liberating the casting from the chill after the removalof the cope comprises a raising of the casting far enough to loosen thebeads or ribs formed externally of the roll-body-forming portion of thecasting relative to the sloping seats 19 upon turning the nuts O in thedirection required to shift the rods P and connected head F upwardly,whereupon thesaid head F can be supported in its elevated position byblocks placed under it preparatory to the removal of the nuts O toaccommodate the hoisting of the jacket D from the drag-casing E. Ofcourse the filling-forming sand or material 34 is drained from the spacebetween the acket and the chill through the apertures 35 upon removingthe plugs 36 preparatory to the removal of the acket. The washers O,plates 55 and blocks y are of course hoisted trom the chill with thejacket or removed preparatory to the hoisting oi' the jacket. Upon theremoval of the jacket the compressible members 56 and the top chill-ringt are removed whereupon the remaining chillrings can be successivelyremoved. The space formed between the roll-body-iorming portion of thecasting and the seats 19 of the sectional rings R by the raising ofthecasting and the beveled surrounding walls of the recesses 18 in the saidrings accommodate and facilitate the raising and lateral separation ofthe sections of' the said rings R which are lifted, divided and removedone at a time after the removal of the top ring t. Obviously the castingis rendered free to be hoisted or removed from the bottom chillring anddrag upon the removal of the intermediate chill-rings R. Should thechillrings be made so shallow in depth or the sloping seats so nearlystraight as to cause the chill-rings or chill to be self-clearing afterthe final cooling or contraction of the casting then the hereinbeforedescribed manipulation to liberate the casting would not be necessary asthe chill-rings or chill could be hoisted independently of any firstraising of the casting.

What I claim is 1. In a mold for castingchilled rolls, a verticallyarranged annular chill composed of superimposed rings arranged in linevertically, with the lower end of the upper of adjacent rings snuglyengaging a recess formed in and extending circumierentially oi the lowerof the said rings, and the opening which extends vertically through eachring below the uppermost or top ring i'laring upwardly and having itssurrounding wall Jforming an upwardly and outwardly sloping seatextending circumierentially oi the chill and from the lower end of therespective ring to the recess in the upper end of the ring.

2. In a roll-casting mold, a vertically arranged annular chill composedof superimposed rings arranged in line vertically, and the opening whichextends vertically through each ring below the uppermost or top ringflaring upwardly so that the surrounding wall of the said opening formsan upwardly and outwardly sloping seat extending circumferentially ofthe chill and from the lower end of the respective ring to the lower endoi the next upper ring.

3. ln a roll-casting mold, a vertically arranged annular chillcomprising intermediate superimposed rings arranged inline verticallywith and interposed between a top ring and a suitably supported bottomring and provided interiorly with upwardly and outwardly sloping seatsextending circumferentially of the chill, and the upper of adjacentintermediate rings overlapping the sloping seat formed internally of thelower of the said rings, and the slopes of the seats in the intermediaterings increasing toward the upper end of the chill.

4. ln a roll-casting mold, a vertically arranged annular chillcomprising su erimposed rings arranged in line vertical y and l'ZOprovided :each interiorly with an upwardly and outwardly sloping seatextending circumferentially of the chill, and the upper of adjacentrings below the uppermost or top ring overhanging the seat formedinternally of the lower of the said adjacent rings.

5. In a roll-casting mold, a vertically arranged annular chillcomprising superimposed intermediate rings arranged in line verticallybetween a suitably su ported bottom ring and a top ring, with the ibwerportion of each intermediate ring snugly embraced by the upper portionof the next lower ring, said intermediate rings being divided verticallyinto sections, with the joints formed between the sections of eachintermediate ring alternating with the joints formed between thesections `of the next adjacent intermediate ring or rings so that theupper of adjacent intermediate rings is overlapped lexteriorly at eachjoint thereof by a section of the lower of' the said adjacent rings.

6. In a roll-casting mold, a vertically arranged annular chillcomprising superimposed rings arranged and held in line vertically withand interposed between a top ring and a suitably supported bottom ring,said rings 'being each provided internally with an upwardly andoutwardly sloping seat extending circumferentially oi' the chill andhaving outlets for yair and gas at the top ofthe said seat, whichoutlets are spaced circumferentially of the chill.

7. In `a roll-casting mold, a vertically arranged annular chillcomprising superimposed rings arranged in line vertically, and theopening which extends vertically through each ring below the uppermostor top ring flaring upwardly so that the surrounding wall of the saidopening forms an upwardly and outwardly sloping seat extendingcircumferentially of the chill and from the lower end of the respectivering to the lower end ofA the next upper ring, and the chill beingprovided at the joint between adjacent rings with outlets for air andgases, which outlets are spaced circumferentially of the chill.

8. In a roll-casting mold, a vertically arranged annular chillcomprising superimposed rings arranged in line vertically, said ringsbeing provided internally with upwardly and outwardly sloping seatsextending circumferentially of the chill, and one of the opposingjoint-forming surfaces of adjacent rings being grooved or recessedtransversely from the interior to the exterior of the chill at suitableintervals circumferentially of the chill.` j

9. In a roll-casting mold, the combination, with an upright annularchill provided with a lateral hole which extends from the interior tothe exterior of the chill and tapers toward its outerend, of acorrespondingly tapering plug engaging the said hole and shiftableinwardly, and means for limiting the inward shifting of the lug.

10. In a rol -casting mold, the combination, with an annular verticallyarranged chill comprising superimposed rings and one of the rings beingprovided with a lateral hole extending from the interior to the exteriorof the chill, a jacket surrounding the chill-rings and provided oppositeand in registry with the aforesaid hole with a lateral hole extendingfrom the interior to the exterior of the jacket, and a plug or memberoccupying and movable endwise of thc said hole and into the interiorchamber of the chill.

11. In a roll-casting mold, a vertically arranged annular chillcomprising superimposed intermediate rings arranged in line verticallybetween a suitably supported bottom ring and a top ring, with theadjacent portions of adjacent intermediate rings overlapping each othercircumferentially, said intermediate rings being divided vertically intosections whose joint-forming ends` have registering holes which extendthrough the said sections, and pins or members engaging the said holes.

12. In a roll-casting mold, a vertically arranged chill comprisingsuperimposed rings divided into sections vertically, with the upper ofadjacent rings resting on the lower of the said rings, and membersspaced circumferentially of the said sections and arranged to' brace theaforesaid sections externally and adjustable to center the upper ofadjacent rings relative to the lower of the said rings.

13. In a roll-casting mold, a vertically arranged chill comprisingsuperimposed rings divided into sections vertically, with the upper ofadjacent rings resting on the lower of the said rings; a jacketsurrounding and formed independent of the said rings and enough largerin internal diameter than the rings to form a space extendingcircumferentially of the chill between the chill and the jacket; aremovable rilling occupying the said space, and members spacedcircumferentially of the chill and supported from the jacket andarranged to brace the aforesaid sections externally and adjustable tocenter the upper of adjacent rings relative to the lower of the saidrings.

14. In a roll-casting mold, the combination, with an annular verticallyarranged chill comprising superimposed intermediate rings interposedbetween a suitably supported bottom ring and a top ring, saidintermediate rings being divided into sections vertically, of a jacketsurrounding the chillrings, and set-screws spaced circumferentially ofthe chill, which set-screws are supported from the jacket and arrangedto brace the sectional chill-rings.

15. Ina roll-casting mold, a suitably supported upright chill providedinteriorly with vertically spaced casting-centering sloping surfaces; asuitably supported vertically movable upper mold-part or cope arrangedto move Within the upper end of the chill, and a lower mold-part or draghaving a suit- 4ably supported depressible body which, is

provided with a cavity arranged centrally of the lower end of and incommunication with the chill, said drag also comprising the followingz-a stationary casing extending circumferentially of the saiddepressible body; a metal-feeding passageway extending through the saidcasing and through the said depressible body and communicating at itsdischarging end with the aforesaid cavity, and means for interruptingcontinuity in the said passageway at the junction of the said casing andthe said depressible body.

16. ln a roll-casting mold, a stationary upright chill providedinteriorly with vertically spaced casting-centering sloping surfaces; asuitably supported vertically movable upper mold-part or cope arrangedto move within the upper end of the chill, and a lower mold-part or draghaving a depressible body provided with a cavity arranged centrally ofthe lower end of and in communication with the chill, said drag alsocomprising the following a stationary casing for the said depressiblebody; a metal-feeding passage-y way extending through the said casingand through the said depressible body and communicating at itsdischarging end with the aforesaid cavity; means for interruptingcontinuity in the said passageway at the junction of the said casing andthe said depressible body, and a suitably supported vertically movablehead arranged under the said depressible body.

17. In a roll-casting mold, a stationary vertically arranged chillprovided interiorly with vertically spaced casting-centering slopingsurfaces; a suitably supported vertically movablen upper mold-part orcope arranged to move within the upper end of the chill, and a lowermold-part or drag having a cavity arranged centrally of the lower end ofand in communication with the chill, which cavity has its surroundingwall or walls and bottom formed by a body of suitable sand, said dragalso comprising the following a sta'- tionary casing surrounding thesaid body of sand, a metal-feeding passage-way extending through thesaid casing and through the said body of sand and communicating at itsdischarging end with the aforesaid cavity a cutoff for interruptingcontinuity in the said passage-way at the junction of the said casingand body of sand, and a suitably supported vertically movable headarranged under said body of sand.

18. ln a roll-casting mold, an upright chill; an upper mold-part or copecommunicating with the upper end of the chill, and a lower mold-part ordrag having a cavity arranged at the-lower end of and in communicationwith the chill, said drag also comprising the following z-a metalfeeding passageway communicating at its discharging end with the saidcavity, and a cut-ofi for interrupting continuity in the saidpassage-way. 19. In a roll-casting mold, a suitably supported uprightchill rovided interiorly with a chamber which is ormed by superimposedrings and extending from end to end of the chill, said rings beingprovided interiorly@ with upwardly and outwardly sloping seats extendingcircumferentially of the chill; an upper mold-part or cope arrangedandsupported as required to render it capable of bee ing lowered within theupper end of the chill ,3i a lower mold-part or drag having a suitablysupported depressible body extendinginto the lowermost or bottomchill-ring and provided with a cavity which communicates with the chillat the lower end of the chill;vl^ said drag also comprising a stationarycasing for the said depressible body; a metal-feeding passagewayextending through the said casing and through the said depressible bodyand communicating at its discharging end with the aforesaid cavity, andmeans for interrupting continuity in the said passageway at the junctionoi the said casing and the said depressible body. 20. In a roll-castingmold, a stationary upright chill provided interiorly with a cham* berwhich is formed by su erimposed rings and extends from end to enc ofthechill, said rings being provided interiorly with u wardly .upper end ofthe chill; a lower mold-part or drag having a cavity whichcommunicatesf` with the chill at the lower end of the chill, whichcavity has its surrounding wall or walls and bottomrformed by a body ofsuitable sand which extends into the lowermost or bottom chill-ring,said drag also compris ing a stationary casing surrounding the said bodyof sand a metal-feeding passage-way extending through the said casingand through the said body of sand and communicating at its dischargingend with the afore said cavity; a cut-ott for interrupting continuity inthe said passage-way at the junction of the said casing and body ofsand, and

a head arranged under and instrumental in I ported vertically movableupper mold-partyfor cope depending into the chill-chamber, and a lowermold-part or drag having a cavity arranged centrally of the lower end ofand in communication with the chill, whichhlo cavity has its surroundingwall or walls and bottom formed by a body of suitable sand, said dragalso comprising a stationary casing surrounding the said body of sand; ametalfeeding passage-way extending through the said casing and throughthe said body of sand and communicating at its discharging end with theaforesaid cavity; a eut-,off for interrupting continuity in the saidpassage- Yvay at the junction of the said casing and body of sand and avertically movable head arranged under said body of sand and operativelyconnected with the cope. v v

22. In a roll-casting mold, a stationary vertically arranged chill; anupper mold-part or cope arranged and adapted to be lowered;

a lower mold-part or drag comprising a de-` pressible. body having acavity arranged centrally of the lower end of andv in communication withthe chill, said drag also comprising a head which bears said depressiblebody and is adapted to be lowered to accommodate the depression of thesaid depressible body.

23. In a roll-casting mold, a stationary upright chill; an uppermold-partor cope arranged and ada ted to be lowered within the upper endof t e chill; a lower mold-part or drag having a cavity which isarranged at the lower end of and in communication with the chill andformed in a body of suitable sand, which drag has a stationary casingsurrounding the said body and is provided with a metal-feedingpassageway which extends through the said casing and through the saidbody of sand and communicates at itsdischarging end with the aforesaidcavity; a head arranged under the said body and adapted to be lowered,and means whereby the said head and body of sand and the cope may belowered while the chill remains stationary.

24. In a roll-casting mold, the combination, with a stationary uprightchill; an u per moldpart or cope arranged and ada ted to be loweredwithin the upper end of t e chill; a lower mold-part or drag having acavity which is arranged at the lower end of and in communication withthe chill and has its surrounding wall or walls and bottom formed by abody of suitable sand, which drag has a stationary casing surroundingthe said body of sand and is provided with a metal-feeding passage-waywhich extends through the said casing and through the said body of sandand communicates at its discharging end with the aforesaid cavity7 saiddrag also comprising means for interrupting continuity in the saidpassage-way at the junction `of the said casing and body of sand, and ahead arranged under said body of sand and adapted to be lowered; ofmeans whereby said head and body of sand and the cope ma besimultaneously lowered while the chil remains stationary.

25,v In a roll-casting mold, a stationary vertically arranged chill;suitably supported blocks s aced circumferentially of the upper end ofthe chill; an upper mold-part or cope arranged and adapted to be loweredwithin the chill and comprising a casing which has portions thereofoverhanging but spaced from the blocks, said casing being provided abovethe said blocks with upright screwthreaded holes and correspondinglythreaded screws engaging Ithe said holes and resting upon the blocks,and a lower mold-part or drag having a cavity arranged at the lower endof and in communication with the chill, which cavity has its surroundingwall or walls and bottom formed by a'body of suitable sand, said dragalso comprising the following Z-Astationary casing surrounding the saidbody of sand; a metal-feeding passageway extending through thelast-mentioned casing and through the said body of sand andcommunicating at its discharging end with the aforesaid cavity; meansfor interrupting continuity in the said passage-way at the junction ofthe said casing and body of sand, and a suitablyl supported headarranged under the said body of sand and adapted to be lowered.

26. In a roll-casting mold, a stationary vertically arranged annularchill; an upper mold-part or cope arranged and adapted to be loweredwithin the upper end of the chill, said cope comprising a casing whichhas portions thereof provided with upright screwthreaded holes andcorrespondingly threaded screws engaging the said holes; a bottombearing for the said screws; a lower moldpart or drag having a cavityarranged centrally of the lower end of and in communication with thechill, which cavity has its surrounding wall or walls and bottom formedby a body of suitable sand, said drag also comprising a stationarycasing surrounding the said body of sand; a metal-feeding passage-wayextending through the said casing and through the said body of san'd andcommunicating at its discharging 'end with the aforesaid cavity; acut-off for interrupting Continuity in the said. passage-way at thejunction of the said casing and body of sand, and a head arranged undersaid body of sand and adapted to be lowered, which head is operativelyconnected with the aforesaid cope-casing.

27. -In a roll-casting mold, the combination, with a stationaryvertically arranged annular chill; an upper mold-part or cope arrangedand adapted to be lowered within the chill, said cope comprising acasing which has portions projecting laterally and outwardly beyond theexterior of the chill and spaced circumferentially of the cope, saidcasing also having portions provided with upright screw-threaded holesand correspondingly threaded screws engaging the said holes; a bottombearing for the screws, and

a lower mold-part or drag having a cavity which communicates with thechill and has its surrounding wall or walls and bottom formed by a bodycomposed of suitable sand and adapted to be depressed, said dragcomprising a stationary casing surrounding the said body of sand, ametal-feeding passageway which extends through the said dragcasing andthrough the said body of sand and communicates at its discharging endwith the aforesaid cavity; a cut-off for interrupting continuity in thesaid passage-way at the junction of the said drag-casing and body ofsand, and a head arranged under said body of sand and adapted to belowered, which head has portions arranged below the said drag-casing andprojecting laterally and outwardly, of upright rods arranged externallyand spaced circumferentially of the chill, which rods havescrew-threaded ends and extend loosely through the said projectingportions of the said head and aforesaid cope-casing nuts mounted on therods under the projecting portions of the said head, and

nuts mounted on the rods above the projecting portions of thecope-casing.

28.1n a roll-casting mold, the combination, with astationary verticallyarranged annular chill g an upper mold-part or cope supported asrequired to render it capable of being lowered within the upper end ofthe chill 5 and a lower mold-part or drag having a cavity whichcommunicates with the chill and has its surrounding wall or walls andbottom formed by a body of suitable sand, said drag comprising astationary casing surrounding the said body of sand; a metal-feedingpassage-way extending through the said casing and through the said bodyof sand and communicating at its discharging end with the aforesaidcavity; a cut-off for interrupting continuity in the said passage-way atthe junction of the said casing and body of sand, and a verticallymovable head arranged under said body of sand, of vertically shiftableupright rods operatively connected with and supporting the said head,which rods are arranged externally and spaced circumferentially of thechill and have screw-threaded portions a suitable distance above thesaid head, and suitably supported nuts engaging thel said screw-threadedportions of the rods.

29. In a roll-casting mold, a lower moldpart or drag having a cavityextending a suitable distance downwardly from the upper end of the dragand formed in a body composed of suitable sand and supported as requiredto render it capable of being depressed, said cavity having an inlet; asuitably supported vertically arranged annular chill communicating atits lower end and centrally with the aforesaid cavity, and a suitablysupported upper mold-part or cope provided with a chamber which isarrangedcentrally of the upper end. of and in communication with thechill, said cope being arranged and adapted to be lowered within theupper end of the chill.

30. 1n a roll-casting mold, a lower moldpart or drag having a cavityextending a suitable distance downwardly from the upper end of the dragand formed in a body composed of suitable sand and supported as requiredto render it capable of being lowered, said -drag comprising astationary casing which surrounds the said body of sand and has ametal-feeding passage-way extending through the said casing andcommunicating at its discharging end with the aforesaid cavity; avertically arranged annular chill communicating at its lower end andcentrally with the aforesaid cavity and mounted on the dragcasing asuitably supported upper moldpart or cope provided with a chamberarranged centrally of the upper end of and in communication with thechill, said cope being supported as required to render it capable ofbeing lowered.

31. 1n a roll-casting mold, a lower moldpart or drag having its cavityextending a suitable distance downwardly from the upper end of the dragand having its surrounding wall or walls and bottom formed by a body ofsuitable sand, said drag 'comprising a stationary casing which surroundsthe said body of sand and having a metal-feeding passage-way extendingthrough the said casing and communicating at its discharging end withthe aforesaid cavity, said casing being provided at its upper end andinternally with an annular recess extending around the said body of sandand having its surrounding wall beveled, which recess is arrangedconcentrically relative to the aforesaid cavity; a suitably supportedvertically shiftable head arranged under the said body of sand 3 avertically arranged annular chill communicating at its lower end andcentrally with the aforesaid cavity, and an upper mold-part or copehaving a chamber arranged centrally of the upper end of andcommunicating with the chill, said cope being supported as required torender it capable of being lowered.

A32. ln a roll-casting mold, a lower moldpart or drag provided with acavity having an inlet and extending a suitable'distance downwardly fromthe upper end of the drag and having its surrounding wall or walls andbottom formed by a body of suitable sand, said drag comprising asuitably supported casing which surrounds the said body of sand avertically arranged annular chill communi- 'cating at its lower end andcentrally with the vring which is mounted on the drag-casing;

means for preventing upward displacement of the top ring, and an uppermold-part or cope supported independently of the chill and having achamber arranged centrally of the upper end of and in communication withthe chill.

33. In a roll-casting mold, a lower moldpart or drag having a cavitywhich extends downwardly from the upper end of the drag and is providedwith an inlet,y said drag comprising a suitably supported casing 5 anupright chill communicating at its lower end and centrally with theaforesaid cavity and -comprising a solid top ring, a solid bottom perend of the drag,` which cavity is provided with an inlet, saidV dragcomprising a suitably supported casing; a vertically arranged annu archill communicating at its lower end and centrally with the aforesaidcavity and comprising superimposed rings arranged over and supportedfrom the drag-casing; means arranged to prevent u ward displacement ofthe top ring and yie dable to accommo date upward calorical expansion ofthe rings, and an upper mold-part or cope supported independently of thechill and having a chamber arranged centrally of the upper end of and incommunication with the chill-cham ber.

35. In a roll-casting mold, a lower moldpart or drag having a suitablysupported depressible body provided with a cavity which extendsdownwardly from the upper end of the drag and is provided with an inlet,said drag comprising a stationary easing which extends circumferentiallyof the said depressible body and is provided internally of its upper endwith an upwardly vand outwardly sloping seat extending circumferentiallyof the casing; an upright chill communicating at its lower end andcentrally with the aforesaid cavity and comprising superimposed ringswhich are arranged in line vertically over and supported from thedrag-casing and provided interiorly with upwardly and outwardly slopingseats extending circumferentially of the chill, and the sloping seat ofthe bottom ring being fiush at its lower end with the upper end of theaforesaid slo ing seat on the drag-casing, and a suitabiljy supportedupper mold-part or cope having a chamber arranged centrally of the upperend of and in communication with the chill.

36. In a roll-casting mold, a lower moldpart or drag having a cavitywhich extends downwardly from the upper end of the drag and is formed bysuitable sand, said drag comprising a suitably supported casing for thesaid sand and having a metal-feeding passageway extending through thecasing and communicating at its discharging end with the aforesaidcavity, said casing being provided internally of its upper end with anupwardly and outwardly sloping seat extending circumferentially of thecasing; a suitably supported head arranged under the said sand andadapted to be lowered; an upright chill communicating at its lower endand centrally with the aforesaid cavity and provided interiorly withupwardly and outwardly sloping seats extending circumferentially of thechill, and the lowermost sloping seat of the chill bein flush at itsupper end with the aforesaid' s oping seat on the drag-casing, and asuitably supported upper moldepart or cope having a chamber arrangedcentrally of the upperV end of and in communication with the chill` 37.In a roll-casting mold, a lower moldpart or drag provided with a cavityhaving an inlet and extending a suitable distance downwardly from theupper end of the drag; a vertically arranged annular chill communicatingat its lower end and centrally with the aforesaid cavity and comprisingsuperimposed intermediate rings arranged in line vertically between asuitably supported bottom ring and a top ring whichr is providedexternally with upwardly facing shoulders spaced circumferentially ofthe chill; means for preventing upward displacement of the top ring andcomprising compressible members engaging the said shoulders, and asuitably supported upper mold-part or cope having a chamber arrangedcentrally of the upper end of and in communication with the c'hill.

38. In a roll-casting mold, a lower moldpart or drag provided with acavity having an inlet and extending a suitable distance downwardly fromthe upper end of the drag;

i a vertically arranged annular chill commu- -the aforesaid cavity andcomprising superimposed intermediate rings arranged in line verticallybetween a suitably supported bottom ring and a top ring which isprovided externally with upwardly facing shoulders spacedcircumferentially of the chill; a suitably supported jacket surroundingthe chill and provided at its upper end with laterally and outwardlyprojecting lugs spaced circumferentially of the jacket; plates restingon i the said lugs and overlapping the aforesaid shoulders; compressiblemembers interposed between the said plates and the shoulders; means forpreventing upward displacement of the said plates, and a suitablysupported upper mold-part or cope having a chamber arranged centrally ofthe upper end of and in communication with the chill-chamber.

40. In a roll-casting mold, a lower moldpart or drag provided with acavity having an inlet; a vertically arranged annular chillcommunicating at its lower end with the said drag-cavity; an uppermold-part or cope provided with a chamber which extends from end to endof the cope and communicates with the chill, said cope consisting of anupper part and a lower part and comprising the following z-a body ofsuitable sand forming the surrounding wall or walls of the innerend-portion of the cope-chamber and shaped to form the inner end-portionof the upper neck of the roll and instrumental in the formation of thelower cope-part; a casing surrounding the said body of sand andcomprising an inner section which supports and extends around the saidbodyT of sand and a suitably supported outer section extending aroundthe said inner section, said inner casing-section being supported fromthe outer casing-section as required to render the former capable of,being lowered independently of the latter; a body of suitable sandformingl the surrounding wall or walls of the remainder of thecope-chamber and shaped to form the wabble-forming outer end-portion ofthe aforesaid roll-neck and a feeding head above the said wabble-formingportion and instrumental in the formation of the upper cope-part, and acasing surroundlng and supporting the last-mentioned body of sand andresting and removable from the inner casing-section of the lowercope-part.

41. In a roll-casting mold, a lower mold- `vpart or drag provided with acavity havin an inlet; a vertically arranged annular chil communicatingat its lower end with the said drag-cavity an upper mold-part or copeprovided with a chamber which extends from end to end of the cope andcommunicates with the chill, Vsaid cope consisting of an upper part anda lower part and comprising the following z-a body of suitable sandforming the surrounding wall or walls of the inner end-portion of the`cope-chamber and shaped to form the inner end-portion of the up er neckof the roll and instrumental in the 'ormation of the lower copepart; acasing surrounding the said body of sand and com rising an inner sectionwhichsupports an extends around the said body of sand and an outersection extending around the said inner section and supportedindependently of the chill, said inner casing-section being supportedfrom the outer casing-section as required to render the former ca ableof being lowered independently of the atter; a body of suitable sandforming the surrounding wall or walls of the remainder of the coechamber andsha ed to form the wabb eforming outer en ortion of theaforesaid roll-neck and a fee( ing-head above vthe said wabble-formingportion and instrumental in the formation of the upper cope-part, and acasing surrounding andsupporting the lastmentioned body of sand andresting on the inner casing-section of the lower cope-part.

42. In a roll-casting mold, a lower moldpart or drag provided with acavity having an inlet; a vertically arranged annular chillcommunicating at its lower end with the said drag-cavity an uppermold-part or cope provided with a chamber which extends from end to endof the cope and communicates with the chill, said cope comprising thefollowing :ma body of suitable sand forming the surrounding wall orwalls yof the inner endportion of the cope-chamber; a casing surroundingthe said body of sand and com rising an inner section which supports anextends `around the said body of sand and a suitably supported outersection extending around the said inner section, said outercasing-section being provided at its upper end and externally with alaterally and outwardly projecting annular flange, and said innercasing-section provided at its upper end and externally with a laterallyand outwardly projecting annular iiange overhanging but suitably s acedfrom the first-mentioned Hange; bo ts arranged with their headscountersunk in the under side of the flange of the outer casing-sectionand with their shanks extending upwardly throughI the flange of theinner casing-section ,nuts on the said Shanks at the top of thelast-mentioned flange; screws screwed into and eX- tending through thelast-mentioned flange into engagement with l[,he up er end of the outercasing-sectiong a body o suitable sand forming the surrounding Wall orWalls of the remainder of the cope-chamber, and a casing Surrounding andsupporting the last-mentioned body of sand and resting on thefirstmentioned cope-easing-section.

In testimony whereof, I sign the foregoing specieation, in the presenceof two Witnesses.

RALPH HENRY WTEST. Witnesses C. H. DORER, B. C. BROWN.

